kuckuc kuckuc kuckuc
kuckuc kuckuc kuckuc .
k u t̪̻s̪̻ k u t̪̻s̪̻ WORD_BOUNDARY k u t̪̻s̪̻ k u t̪̻s̪̻ WORD_BOUNDARY k u t̪̻s̪̻ k u t̪̻s̪̻ WORD_BOUNDARY
k u c k u c WORD_BOUNDARY k u c k u c WORD_BOUNDARY k u c k u c WORD_BOUNDARY . WORD_BOUNDARY